I am looking for information on surnames Grillo and Castillo in Tampico. My great-great grandmother was Concepcion Grillo Castillo (married Enrico Tessada). Her father was Juan Grillo and her mother was Petra Castillo. I've seen Grillo mentioned in some historical anecdotes on the Tampico area, and have the names of Concepcion's many siblings and some of their spouses.

Thanks,
Menna